Dr. Demetrios Markouizos, MD, FAAP

Dr. Mark is an amazing and caring doctor. From when Joejoe was a newborn we always received exceptional care. Even when Joejoe doesn't feel well he's happy to see Dr. Mark. It makes a difference when your doctor cares. And the staff is always great there!

As a first time mommy, it was a no brainer as to who I was going to chose as my son's pediatrician. Dr. Markouizos was also my pediatrician and always made my visits happy ones. He's kind, gentle, smart, reliable and truly one of a kind. I honestly did not realize how great he was until I saw him with my own child who has severe allergies to dairy and soy along with laryngomalacia.

He was able to root through the issues very quickly, and was always there to take our calls or immediately call us back if we were not able to get a hold of him. As 1st time nervous parents, this took a lot of our stress away. I highly recommend him for all parents with children. I promise, you will not be disappointed and he will always guide you with your child's best interests in mind.

Dr. Markouizos has been my whole families pediatrician and fortunately now, my dear little one's also. I am and have always been the happiest patient, the same for my family too. The staff here is always pleasant and very helpful, as is Dr. Markouizos. I give his information to whoever asks for the best doctor and i look forward to being treated by solely him and his staff. He's most definitely a Keeper.

we have been here for years, they not only treat my children's physical needs but have been there for the emotional ones as well. This staff is family to us, from the front to the nurses and doctors they have supported us every way possible. They will always be a part of our lives

Dr Markouizos is the most amazing doctor. He only has to look @my daughter and tell what is happening with her. I trust him diagnosing her. He found a rare heart defect that saved her life. You will not find a wonderful genuine doctor. He treatseveryone like his own children.

I've known him since my daughter was a baby. Always goes above and beyond for his patients. My daughter is a special needs child and i travel 2 and a half hours to see him. He takes good care of my daughter i recommend him to all of my friends and family. His staff and other Doctors at the practice are very friendly and welcoming.

SaraMaria Vaccaro

Dr. Markouizos and his staff including Dr. Chung take care of my diabetic daughter very well. They are on top of her condition and follow up to make sure she is doing well.

Dr. Demetrios Markouizos, One of the best doctors in the area, my children have been in his care for years. My children feel safe and confident with him. THANK YOU Dr. Markouizos for your great help.

Dr. Markouizos has been my daughters pediatrician since she was a year old and now at 14 I wouldn't trust any other doctor with my "now" teenager! He is so thorough with questions and examinations Never jumps the gun with prescribing antibiotics which I value greatly. A true professional with a great bed side manner that any mom with the level of anxiety I have would truly appreciate.

We've been coming to Dr. M since before our daughter was born (almost 12 years ago). He is an amazing doctor who truly cares. You feel his genuine love for our family and the feeling is mutual. He is an amazing doctor. The highest recommendation.

We love how amazing, knowledgeable and smart Dr Markouizos is. I couldn't be more pleased with the service and care Dr. M provides for my kids. i am always able to get in for an appointment. He takes special time with his patients and remembers what matters. He's always on point with his diagnosis and takes that extra step not to do any unnecessary testing. Thank you Dr. Markouzious for taking such good care of my boys.

Dr. Markouizos is very attentive, kind and caring. He listens to our concerns and will not give up until he finds the root of the problem. I always recommend Dr. Markouizos to everyone who has children. He was my doctor and now my children's doctor. He is truly the best there is.

I have been going to doctor Markouizo since i was a child myself, and when I fell pregnant i knew i woud go to him right away for my daughter but i know i made the right dessicion when my daughter developed a milk protein allergy, he was the greatest asset to her care we could have ever imagined. he not only called me back at all crazy hours of the night but my daughter is 4 months old now i still have never bought formula because he has been willing to help me and provided us with all we need

My daughter loves Dr. Markouizos and all of the doctors at his practice. Everyone gets high fives and fist bumps as we walk in and out. They are compassionate, fun, and most importantly they are very good at what they do. They are transparent and always happy to talk through any questions we have (and considering she's my first born there were and are a LOT of questions). We strongly recommend Dr. Markouizos to anyone looking for a pediatrician.

He is a very comforting Dr, he is always caring on each patent. He is the best in Astoria!!

Dr. Marqouizos is truly the best pediatrician in the world. He was mine and my sisters doctor when we were little, and now takes care of my children. I would not bring my children to any one else!!!! He explains everything in detail, he answers all your questions, he does not rush you out of the office ever! He truly loves all children and it shows when he is with them. So happy to have him as my children's doctor. His staff is also exceptional!!!!!!

I've been a patient here since I was a newborn & I honestly never want to change doctors. Dr. Markouizos and the rest of his team go above and beyond to make sure you get better, are comfortable in the process of doing so, and get what you need. He is the most thorough doctor I've met thus far & I recommend this place to absolutely everyone.

The staff is very friendly and the offices are extremely clean. Dr. Markouizos is an excellent physician and treats his patients and anyone who walks through the door with care and compassion as if they were his own family.

We trust Dr. Markouizos a lot.
Always takes good care of my son, well or sick.
Even though we moved, we always come back to see him.

My experience with Dr.Markouizos has been amazing and we couldn't be more pleased with him. He is a very thorough physician and makes u feel very comfortable. Dr. Markouizos and his staff are wonderful!!!